First published on MSDN on Dec 18, 2018
The 13th cumulative update release for SQL Server 2017 RTM is now available for download at the Microsoft Downloads site. Please note that registration is no longer required to download Cumulative updates.
To learn more about the release or servicing model, please visit:

Note:
For this Cumulative Update release, it is intentional that SQL Server 2017 CU13 is releasing to Download Center on 12/18/2018 and releasing to Microsoft Update Catalog on 1/3/2019. This is to abide with the Microsoft Update No Fly Zone during the end of year holidays.

This error can occur in queries using the TREATAS function, common in Power BI generated DAX queries. It is recommended you
do not install
the SQL Server 2017 CU13 hotfix on computers with Analysis Services instances when Power BI Desktop or Power BI Service is a client querying that server instance.

A fix for this issue will ship in the next SQL Server 2017 Cumulative Update.